264550144431 has 4 divisors (see below), whose sum is σ = 352733525912. Its totient is φ = 176366762952.

The previous prime is 264550144403. The next prime is 264550144457. The reversal of 264550144431 is 134441055462.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 264550144431 - 2¹¹ = 264550142383 is a prime.

It is a super-2 number, since 2×264550144431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264550144431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264550146431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44091690736 + ... + 44091690741.

It is an arithmetic number, because the mean of its divisors is an integer number (88183381478).

Almost surely, 2^264550144431 is an apocalyptic number.

264550144431 is a deficient number, since it is larger than the sum of its proper divisors (88183381481).

264550144431 is an equidigital number, since it uses as much as digits as its factorization.

264550144431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88183381480.

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 264550144431 its reverse (134441055462), we get a palindrome (398991199893).

The spelling of 264550144431 in words is "two hundred sixty-four billion, five hundred fifty million, one hundred forty-four thousand, four hundred thirty-one".